Abstract: A coil module includes a coil conductor including a plurality of coil elements and a plurality of wire electrodes disposed on a circuit board, each of the plurality of coil elements including a pair of leg portions and a bridge portion connecting one end portions of the pair of leg portions together, the plurality of coil elements being disposed to cross a winding axis. A method for manufacturing the coil module includes an assembly forming step of integrating the plurality of coil elements with resin to form a coil element assembly, and a conductor forming step of mounting the coil element assembly on the circuit board to complete the coil conductor wound about the winding axis. In the conductor forming step, the resin is introduced into a die set in which the plurality of coil elements are arranged to form a block, to thus form the coil element assembly.

Abstract: An apparatus for securing a transformer that includes a mounting bracket coupled to an exterior surface of the transformer, the mounting bracket having a first length, a first height, and a first width to define a mounting bracket having an interior cavity includes a housing having a second length, a second height, and a second width to define an interior cavity with at least one interior surface. The second length is larger than the first length of the mounting bracket and the second width is larger than the first width such that the mounting bracket is receivable into the interior cavity. A shaft member extends from the at least one interior surface along the second length within the housing interior cavity. The shaft member receives a securing strap around at least a portion of the shaft member within the mounting bracket to secure the transformer to the apparatus.

Abstract: Provided is a reactor that can maintain the state of being fixed to an installation target, and whose magnetic core is difficult to damage. The reactor includes a combined body that includes: a coil; and a magnetic core that is located inside and outside the coil to form a closed magnetic circuit. An outer core portion of the magnetic core, the outer core portion, which is located outside the coil: is formed using a composite material that is a resin in which magnetic powder is dispersed; and is provided with bolt holes into which bolts for fixing the combined body to an installation target are inserted. The reactor further includes a flat plate member that is fastened to the outer core portion by the bolts, and is disposed such that the coil is exposed.

Abstract: First and second divisional cores each including right and left leg portions and a yoke interconnecting those together are formed by molding respective yoke-side core members in a resin. Cylindrical core mounting portions extending from the outer circumference of the surface of the yoke-side core member are formed integrally with the respective right and left leg portions of the first. divisional core. I-shaped leg-portion-side core members and spacers are attached in the cylindrical core mounting portion formed in each of the right and left leg portions. The surface of the yoke-side core member molded in the resin and the surface of the leg-portion-side core member are disposed so as to have a spacer therebetween. The two divisional cores are joined together by butting respective leg portions of the two divisional cores with each other to form an annular mold core, and a coil is wound around the mold core.

Abstract: The invention comprises an inductor configured for filtering medium and/or high voltage power. The inductor includes an inductor core formed of a plurality of coated magnetic particles, each of a majority of the coated magnetic particles including: a magnetic particle core and a non-magnetic coating about a corresponding magnetic particle core. The inductor optionally includes: (1) a main inductor spacer separating a first turn of a winding from a terminal turn of the winding and (2) a segmenting spacer separating two consecutive turns of the winding about said core. The inductor is configured to convert power into an output current, such as power of at least one thousand five hundred volts with an input current of at least fifty amperes.

Abstract: Provided is a reactor which uses a reactor core in which J-shaped iron cores are oppositely disposed in a ring shape. In the ring shape, an axial outer circumferential part of a first coil wound around a first gap and an axial outer circumferential part of a second coil wound around a second gap overlap each other in an axial direction. Regarding four holding stay parts disposed at four corners of the reactor, the rigidity of the holding stay parts close to the first gap and the second gap is lower than the rigidity of the holding stay parts far from the first gap and the second gap.

Abstract: The invention provides a reactor to be built in a power converter. In the reactor, an induction component composed of a coil being a winding of a conductor wire, a core in which interior a magnetic path is formed and an insulation bobbin positioning and engaging a wire wound part of the coil is housed in a case to be soaked with a mold resin. Inner bottom face of the case has a plurality of surfaces having not less than two different heights letting the outside bottom of the case a reference surface, and the lower end face of the core is in contact with any of the case inner bottom surfaces excluding the lowest inner bottom surface. As a result, the reactor is suitable for on-vehicle applications to achieve reduced article variation as well as a longer service life, a shorter operation time and decreased cost.

Abstract: A clamp for a choke is provided, the clamp comprising a component configured to hold a choke and at least one electrical connector receiving element for receiving one or more electrical connectors of a choke. The clamp is fitted to the choke and then the assembly is fitted into a device, such as a chassis.

Abstract: A core fixing member including: a core fixing part that has a plate-like shape and is to be fixed to a core; a case fixing part that has a plate-like shape and is to be fixed to a case; and at least one an arm part connecting the case fixing part with the core fixing part, and wherein the core fixing part and the case fixing part are arranged in a same plane, and the at least one arm part is formed in a shape of a letter ‘U’, and one end of the at least one arm part is connected to the core fixing part and the other end of the at least one arm part is connected to the case fixing part.

Abstract: An amorphous transformer which includes an amorphous core formed of an amorphous material with a lap provided at an upper portion and allowed to stand in substantially a vertical direction while being supported at a core support member, and a coil which is fitted with the amorphous core. The core support member is formed by integrating a core support member for supporting a side surface of the amorphous core and a corner support member for supporting a corner portion of the core. The core support member is provided in substantially a vertical direction along at least one of the side surfaces of the core.

Abstract: The invention comprises a liquid cooled inductor system including at least an inductor and an immersion fluid directly contacting at least a portion of the inductor, such as an inductor core and/or an inductor winding. The immersion fluid is a substantially non-electrically conducting fluid. Preferably, the inductor comprises an inductor core, such as an annularly shaped core, having a plurality of sub-millimeter sized coated particles having alternating magnetic and non-magnetic layers. Optionally, a cooling coil passes through the immersion fluid, the cooling coil carrying a liquid coolant used to remove heat from the inductor.

Abstract: A reactor-securing structure includes, one end of a first-side stay and one end of a second-side stay that are connected to portions of a reactor which are separated from each other at the two sides of a coil axial direction. The other end of the first-side stay and the other end of the second-side stay are fastened in states overlapping the inverter case. A first-side overlapping portion is formed by having the other end of the first-side stay overlap the inverter case, and a second-side overlapping portion is formed by having the other end of the second-side stay overlap the inverter case. A portion of the first-side overlapping portion and a portion of the second-side overlapping portion, when seen from a plan view, are provided in the same range relating to the length direction of the I-shaped section forming the reactor.

Abstract: A mobile terminal includes a terminal body comprising a base having a defined region on a first surface of the base and a plurality of protrusions protruding from the first surface, wherein the plurality of protrusions are spaced apart from each other along an edge of the defined region; and an antenna coil wound around each protrusion of the plurality of protrusions and extending from each protrusion to at least one adjacent protrusion of the plurality of protrusions along the edge of the defined region to form a loop along the edge of the defined region, wherein the antenna coil is configured to transmit or receive a radio signal for near field communication.

Abstract: A reactor includes: a molded coil including two coils integrally molded with resin; and two U-shaped cores each having core insertion portions inserted in the coils in a coil axial direction, and the cores being joined in a track-like form by interposing gap elements between them to form a core assembly. The molded coil has a substantially hexahedral shape, each of the cores includes a core outer portion joining the core insertion portions, a resin layer made of magnetic-metal containing resin consisting of binder resin and magnetic metal powder mixed therein is formed on outer surfaces of the core outer portions, the molded coil includes a fastening retaining part for holding and fixing the reactor to a cabinet with a fastening member so that the cabinet supports the reactor, and the molded coil is held apart from the cabinet by the fastening member and the fastening-member retaining part.

Abstract: [PROBLEM] By simplifying a core securing structure of a reactor, miniaturization, lightweight, and low costs of the reactor are achieved. [SOLVING MEANS] The core securing member to secure a core 109 in a case 101 in the reactor wherein the core 109 and the coil 105 are housed in the case 101 is made up of a first spring portion S1 which gives momentum to a side face of the core 109 in a horizontal direction and a second spring portion S2 which gives momentum to an upper face of the core 109 in a vertical direction. Moreover, a stopper portion to restrict popping of the core from the case and the second spring portion are integrally formed with a notch being interposed between the stopper and the second spring portion so that the stopper portion covers part of an upper face of the core.

Abstract: An ultra-wideband assembly in an electrical circuit having a circuit board with a conductive micro-strip line is provided. The assembly includes a non-conductive tapered core having an outer surface, a distal end, and a proximate end. The distal end is being larger than proximate end. The assembly includes a conductive wire having a proximate end and a distal end and being wound about at least a portion of the non-conductive tapered core. The proximate end of the conductive wire extends away from the proximate end of the non-conductive tapered core and is being conductively coupled to the micro-strip line of the circuit board. The distal end of the conductive wire extends away from the distal end of the non-conductive tapered core. The conductive wire contacts at least a portion of the outer surface of the non-conductive tapered core. The assembly includes a supporting bracket coupled to the non-conductive tapered core. The bracket includes a base portion and a core attachment portion.

Abstract: The present invention provides a fixing structure and a fixing member for a stationary induction apparatus, which can easily and inexpensively be assembled with a small number of constituent elements, and which are capable of reliable fixation. A fixing portion 4 which fixes the core 2 of a reactor to a case 1 is provided. The fixing portion 4 has a slide block 40 in contact with the core 2; a fixing bolt 42 which fixes the slide block 40 with respect to the case 1; and a slide base 41 provided between the slide block 40 and the case 1, and fixed to the case 1 together with the slide block 40. The slide block 40 and the slide base 41 have inclined faces 40d, 41b in mutual contact, and the slide block 40 has a first impelling portion 40a which impels the core 2 in a vertical direction and a second impelling portion 40b which impels the core 2 in a horizontal direction, according to fastening by the fixing bolt 42.

Abstract: The invention comprises an inductor mounting method and apparatus. An about annular inductor is mounted using a non-conducting clamp element passing at least into a center opening of the inductor. Mounting hardware forces the clamp element toward a mounting surface to edge mount the inductor, where the mounting hardware, non-conducting clamp element, and mounting surface minimally contact the inductor. The minimal contact allows greater surface area for liquid, convective, and/or radiative cooling of the inductor. The inductor is optionally composed of particles of magnetic material coated with carbon and embedded into an epoxy to yield a distributed gap material.

Abstract: An ignition coil assembly mounted on a valve cover whereby the plurality of coils connected to the ignition coil assembly are individually removable. The ignition coil assembly comprises a base plate and coil bracket that rotateably couple, preferably with a hinging element, allowing for access and removal of individual coils as from the engine or valve cover. The coil bracket is also able to be removed from the base member. A preferred embodiment involves locking the assembly in place with fasteners. A method for manufacture of the ignition coil assembly with the steps of rotateably coupling the base plate and coil bracket. A method for replacing ignition coils from an engine comprising separating the coil bracket from the base plate, removing and replacing individual ignition coils, and locking the coil bracket to the base plate.

Abstract: An inductor has a case having an opening, a core accommodated in the case, a coil wound on a part of the core and a fixing member fixed to the case. The fixing member fixes the core by contacting a top surface of the core facing the opening and elastically biasing the core toward a bottom surface of the case. The fixing member further includes a first plate portion and a first contacting portion. The first plate portion is disposed between the top surface of the core and the opening of the case and extending in parallel with the top surface of the core. The first contacting portion extends from a fore-end portion of the first plate portion so as to be U-shaped and having a distal end portion elastically push-contacting the top surface of the core.

Abstract: A carrier device for a toroidal-core choke includes a base plate, which has projecting wire-guiding devices. A holder for an inductive component includes the carrier device and an electrical isolation device. The holder can be part of an inductive component.

Abstract: An inductor apparatus including an inductor having a core formed in a loop shape to form a hollow part, and a coil winding the core, and a supporting member having a supporting surface to support the core to face the hollow part, and a vibration preventing hole formed to correspond to the hollow part of the core.

Abstract: An ultra-wideband assembly is provided. The assembly includes a non-conductive tapered core having a conductive wire wound on an outer surface of the non-conductive tapered core, a low-frequency inductor coupled to the non-conductive tapered core via the distal end of the conductive wire and configured to allow mounting of the non-conductive tapered core at an angle with respect to the circuit board. The low frequency inductor is being disposed on a dielectric board configured to be coupled to the circuit board. The assembly includes an ultra-wideband capacitor coupled to the non-conductive tapered core via the proximate end of the conductive wire, the ultra-wideband capacitor being also coupled to the transmission line on the dielectric board.

Abstract: A brushless motor is provided with: a tubular stator case; a stator core; a rotor rotatably supported via a bearing inside the stator core; a bracket which closes an opening at one end of the stator case; a coil bobbin around which a coil is wound is mounted on an inner peripheral surface of the stator core; a lead wire which feeds power to the coil; and a wiring substrate which relays a connection between one end of the lead wire and the coil, wherein: a drawn-out hole is formed on the bracket at the position corresponding to the connection point of said one end of the lead wire and the wiring substrate such that the other end of the lead wire is drawn outward; and a harness guide is provided on a peripheral edge of the drawn-out hole such that the drawn lead wire is bent and fixed.

Abstract: A high-voltage transformer includes a core, a coil part, a diode holder, a component block, and a substantially rectangular parallelepiped shaped outer case for accommodating the coil part, the diode holder, and the component block. The coil part includes a coil bobbin into which the core is inserted, and windings wound around the coil bobbin. The diode block includes a plurality of diodes connected to the windings, and a member for holding the diodes. The component block includes electrical components connected to the windings, and a member on which the electrical components are fixedly arranged. The high-voltage transformer is low-profile and small in size.

Abstract: Methods and apparatus according to various aspects of the present invention may be implemented in conjunction with a inductor mount mounting to a mounting surface. The inductor mount may comprise an inductor having a center opening, and a surface area encompassing all of a front face, a back face, an inner surface about the center opening, and an outer edge concentric about the center opening. The inductor mount may further include mounting hardware holding the outer edge of then inductor to the mounting surface. A cooling element moves air into contact with the front face, through the center opening, and around the outer edge of the inductor. In various embodiments, the mounting hardware contacts less that ten percent of the surface area of the inductor.

Abstract: A plate member includes a frame portion (51) provided in a state of coupling both one end portion and other end portion and mounting terminal portions (44) protruding from the one end portion and the other end portion of said frame portion (51) to approach each other, from which a PCB joint portions (46) to be a mounting portion to a PCB are formed by cutting and bending when manufacturing a magnetic element. Further, a winding number adjustment means (41), which is capable of selecting joint portions with ends of a coil and adjusting the winding number of the coil in accordance with the selection, protrudes from the one end portion and the other end portion to approach each other farther as compared to the mounting terminal portions (44).

Abstract: A carrier device for a toroidal-core choke includes a base plate, which has projecting wire-guiding devices. A holder for an inductive component includes the carrier device and an electrical isolation device. The holder can be part of an inductive component.

Abstract: An oil-filled pole-mounted distribution transformer comprises a tank housing a transformer core-coil assembly immersed in cooling oil. The tank is made of a corrosion-proof composite material and a radiator is provided for cooling the oil. The radiator is external to the tank and has a hot oil inlet and a cool oil outlet located at different levels into the tank for causing a natural circulation of oil through the radiator by thermal siphoning.

Abstract: The invention relates to a fastening device for a toroidal choking coil for fastening a toroidal coil (1) to an electric device or a corresponding supporting base (13), the toroidal choking coil comprising an inner circumference defined by a surface parallel with an axis of rotation of the toroidal choking coil (1) and located closest to the axis of rotation, an outer circumference defined by a surface parallel with the axis of rotation of the toroidal choking coil (1) and located outermost from the axis of rotation, and side surfaces defined by surfaces perpendicular to the axis of rotation of the toroidal choking coil (1) and connecting the inner circumference and the outer circumference.

Abstract: An electrical transformer is disclosed. The electrical transformer comprises a central axis, a first modular section, and a second modular section. The first modular section is positioned about the central axis and comprises a first support, a first winding of a conductive element, and a first insulating material. The first winding of a conductive element is located about the first support. The first insulating material covers a portion of the first modular section. The second modular section is axially aligned with the first modular section and electrically connected to the first modular section. The second modular section comprises a second support, a second winding of a conductive element, and a second insulating material. The second winding of a conductive element is located about the second support. The second insulating material covers a portion of the second modular section.

Abstract: An electric solenoid with adaptable terminals and posts to connect to a variety of different electric connectors, and with a multiple-eared mounting plate permitting mounting in a variety of configurations. The solenoid posts combine internally-threaded female post receptors integrally molded into the solenoid casing, with removable post studs, one end of which is threaded to screw into the respective female post receptor. The other end of the removable post studs are also threaded, and can be formed in a variety of different sizes to accommodate a variety of connectors as needed for a particular application. The energizing terminal (and ground terminal, if present) can accommodate a variety of connector types, including eyelet leads, push-on connectors, and spade connectors.

Abstract: In an ignition coil assembly, a plurality of ignition coils is arranged to be electrically connected to spark plugs received in plug holes of an engine. A base cover includes a plurality of receiving through holes, which are arranged at corresponding positions that correspond to positions of the plug holes, respectively. A top cover covers a top surface of the base cover and secures each ignition coil through engagement with the head of each ignition coil. Fastening bolts temporarily fasten the top cover and the base cover in a manner that allows sliding adjustment of a securing position of each ignition coil, which is loosely received in a corresponding one of the base cover through holes, in an imaginary plane that is perpendicular to an axis of each ignition coil.

Abstract: Transformer cores, especially those of wound or laminated annealed amorphous metals which include support assemblies are disclosed. Methods for their manufacture, and their use in assembled transformers are also disclosed.

Abstract: A flyback transformer is mounted on a main wiring board formed with a power circuit. A mounting bracket shaped like an L-character in plan view is integrally molded on a chassis. A mounting portion disposed at the top of the flyback transformer is fixed by screws to an upper end of the mounting bracket. A boss in a height middle portion of the mounting bracket is fitted into a cabinet.

Abstract: A solenoid assembly has a U-shaped bracket with outwardly extending mounting appendages. A solenoid coil has one end supported by the U-shaped bracket, a centerplate for centering and supporting the opposite end of the solenoid coil and a trapping plate for trapping the centerplate and solenoid coil in the U-shaped bracket. The U-shaped bracket has at least one tear-off tab attachment appendage and a break-off necked-down portion connecting the at least one attachment appendage to the U-shaped bracket whereby the tear-off tab can be torn off by twisting either up or down, side to side, or by rotating the tab around the neck axis.

Abstract: A flyback transformer is mounted on a main wiring board formed with a power circuit. A mounting bracket shaped like an L-character in plan view is integrally molded on a chassis. A mounting portion disposed at the top of the flyback transformer is fixed by screws to an upper end of the mounting bracket. A boss in a height middle portion of the mounting bracket is fitted into a cabinet.

Abstract: A transformer includes a ferrite base plate having a chamber for receiving a winding and one or more further windings which may be coupled to a ground. The windings are electrically coupled together, and separated from each other by partitions. An insulating strap may be wound around the ferrite base plate, and engaged with the ground, for securing the ground to the ferrite base plate and for preventing the ground to the ferrite base plate from moving relative to the ferrite base plate. One or more conductive panels may be engaged between the partitions of the windings.

Abstract: A removable mounting bracket for attaching a component to a mounting surface includes a bracket body having a mounting projection and a plurality of elongated retaining members extending outwardly therefrom. The mounting projection cooperates with a fastener for fastening the component to the mounting surface. At least one of the retaining members has an aperture formed therein that releasably engages a corresponding plurality of mounting tabs formed on the component.

Abstract: A modular support system (20) for supporting electrical leads (24) within the tank (28) of a power transformer (22). The support system includes a plurality of standardized frame members (38) and a plurality of standardized lead supports (45). Each standardized frame member has a plurality of apertures (50) spaced from one another along its length. The arrangement of the apertures allows the support system to be configured in any of variety of configurations to suit a particular arrangement of transformer leads. The standardized frame members are connected to one another with connections (56) that each engage corresponding apertures. Similarly, each lead support is connected to one of the standardized frame members with a connection (62) that engages corresponding apertures.

Abstract: A mounting system for use in an electrical housing or junction box provides a tactile indication to the installer that the housing is properly installed. The mounting system includes a keyhole shaped opening in a wall of the housing. The keyhole-shaped opening has a smaller section dimensioned to receive a shaft of a fastener and larger section to receive the head of the fastener. A neck portion between the smaller and larger sections has a width less than a width of the fastener shaft to provide interference as the fastener slides between the larger and smaller sections. In one embodiment, the neck portion is formed by two flexible arms extending into the opening. The housing is positioned over the head of the mounting member and repositioned so that the shank of the fastener slides between the two arm members. In so doing, the arm members flex outwardly, and then snap back into place after the shank is fully and properly seated in the smaller section of the keyhole shaped opening.

Abstract: An apparatus and method for releasable securement together of a transformer power supply assembly together which includes a stacked arrangement (20) of a first transformer core plate (28) positioned to overlie a circuit board (26), a second transformer core plate (24) positioned to underlie the first transformer core plate (28) and the circuit board (26) and a carrier member (22) positioned beneath the second transformer core plate (24), the first and second transformer core plates (28,24) contact one another through at least one opening positioned in the circuit board (26). The apparatus includes having a body positioned over the first transformer core plate (28) in which the body of the span member (32) extends over a surface of the first transformer core plate (28) and extends from a portion of a peripheral edge of the first transformer core plate (28) to another portion of the peripheral edge of the first transformer core plate (28).

Abstract: An inductor assembly is disclosed for protecting electronic circuitry in a downhole equipment string. The inductor assembly includes a plurality of modular inductors coupled to one another in series to provide the desired inductance. The modular inductors are supported by a support structure in a protective housing, such as in a common housing with the electronic circuitry. The inductor assembly is electrically isolated from the housing. The support structure may include insulative end members and rail members extending between the end members to which the inductors are secured. One or more insulative covers are provided around the inductors to further isolate the inductors from the housing. The inductor assembly dissipates energy in the event of certain failure modes of power supply circuitry or lines extending from the earth's surface. The inductor may be secured electrically between a neutral node in a Y-wound motor to prevent high voltage ac waveforms from damaging the electronic circuitry.

Abstract: A universal transformer tank for distribution transformers is comprised of a cylindrical housing having a circumferential side wall, a bottom wall and an open top end. A cover is removably secured on the open top end. An adjustable clamping assembly is secured inside the housing above the bottom wall and has adjustable clamping means to secure distribution transformers of varying configurations capacities and size inside the housing.

Abstract: An integrated inductive assembly includes first and second inductive elements each comprising a winding wherein winding axes of the windings are perpendicular to one another. In addition, the first and second inductive elements are carried adjacent one another by a bracket.

Abstract: An ignition coil arrangement for internal combustion engines is embodied so that a housing of an individual ignition coil can be produced economically, and attachment of the ignition coil can be accomplished easily. The ignition coil is configured as a rod-type ignition coil, and the housing is of basically cylindrical shape, since a holding element for fastening the ignition coil is configured in the high-voltage output of the ignition coil itself. Assembly and retention of the ignition coil are accomplished by a direct threaded connection on the high-voltage terminal of a spark plug. For rotational immobilization, a primary terminal of the ignition coil is coupled to a fastenable mating plug as a joining member. The ignition coil arrangement is preferably used in motor vehicles.

Abstract: A coin accepting apparatus. The apparatus includes a pair of generally parallel, spaced-apart plates. The plates define a coin track for receiving and guiding coins wherein each plate has a side facing the coin track and an opposing side facing away from the coin track. The apparatus further includes a sensor on the opposing side of one plate for detecting a characteristic of coins to be validated and first and second retainers on the opposing side of the plate for inhibiting movement of the sensor. The first retainer includes a spring arm for engaging the sensor and biasing the sensor against the opposing side of the plate. The second retainer engages the sensor and constrains movement of the sensor along an axis generally perpendicular to the opposing side of the plate.

Abstract: A clamping frame for a transformer core has a clamping frame part and a tensioner. The surfaces of the tensioner and of the clamping frame part abutting the transformer core lie in a common plane. The tensioner features an engagement part, which engages in a recess of the clamping frame part.

Abstract: A method of producing a composite component and a composite device which are small in size, high in the mass-production aptitude, and stable in the electrical characteristics. The composite component includes an inductor (1), coupling unit (3), and at least one circuit component (2) different from the inductor (1). The inductor (1) includes a coil support (12) having a coil winding portion (123) at the middle body thereof, and has a coil (11) wound around the coil winding portion (123). The coupling unit (3) is arranged such that one end of metal pieces (31 and 32) is fixed to one end face of the two end faces of the coil support (12) and the other ends of the metal pieces face each other across a space. The circuit component (2) is a chip component having electrodes (22 and 23) at two opposite ends of a base body (21), and is disposed between the metal pieces (31 and 32). The electrodes ( 22 and 23) are mounted fixedly to the metal pieces (31 and 32).

Abstract: A ballast holder which can be fabricated from a single piece of bent sheet metal material, includes a gusseted riser structure, a base portion extending rearwardly from the foot of the riser structure, and a top flange portion extending in a forwardly direction from the top end of the riser structure for securing one of the mounting flanges of a ballast. The height of the rigid riser structure is chosen to be at least as great as the maximum height of a standard ballast to be held thereby. The ballast holder is used to install a ballast in an inverted position within a lighting fixture housing and can accommodate different sized ballasts. The ballast holder also reduces the amount of structure between the ballast and the overlying reflector element of the lighting fixture and thereby reduces the tendency of the ballast holding structure to bow or distort the lighting fixture's reflector where space is limited.